Roofing and method of making same



June 10, 1930- L. KlscHBRAuN 1,763,601

ROOEING AND METHOD OF MAKING SAME Filed Oct. 20. 1926 Pz'atented June 10, 1930v UNITED sTAsH-:sA

PATENT; orrlca LESTER XRSCHBRAUN, F LEONIA, .NEW JERSEY, ASSIGNOB, BY MESNEASSIGNMENTS, T0 THE PATENT .AND LICENSING COBEORATION, OF BOSTON, MASSACHUSETTS, A.

CORPORATION OF MASSACHUSETTS :aoormo .AND METHOD or MAKING SAME 4appmation med october 20,1926. serial 1ro. masso.-

The invention is more particularl directed to flexible roofing material, and in i s specific embodiment comprises Va flexible roofing sheet having on its surface in predetermined areas, granular material, said sheet being folded7 upon itself, and the opposed foldednfacings carrying a granular material united together by means of an adhesive to provide a folded sheet the interior of which carries granular filling material.

An object of the invention is to provide a relatively light weight thick butt tapered flexible roofing element of desired size and shape.

flhe method of producing such a product briefly stated, comprises appl ing and uniting to a surface of exible roo ng sheet granular material in spaced areas. The sheet may be then folded, and the opposed faces of both the sheet and the granular material firmly united .by means of an adhesive. The application of the granular material to a surface of theunfolded sheet is carefully regulated to concentrate said granular material in the interior of the' folded sheet in greatest bulk or amount adjacent the folded edge, to produce a thick butt tapered roofing element.

As one of the features of the invention, the folded sheet' is immersed in suitable waterproofing material to coat all edges and'surfaces, and form an impervious enveloping coating about the folded sheet, whichwill prevent de-lamination. The usual granular y surfacing may be imbedded in this coating.

Other advantages and objects of the present method and product will be hereinafter more particularly brought out.

In the drawings, Fig. 1 is a plan view of an unfolded sheet provided with spaced areas of granular material.

Fig. 2 is a cross sectional view on line 2 2 of Fig. 1. l

Fig. 3 is a cross sectional view illustratin the method of foldingA the sheet *upon itsel Fig. 4 is a cross sectional view illustrating a thick butt tapered roofing element, made in accordance with the present invention immediately after folding. l

Fig. 5 is a View 'similar to Fig. 4 showing the sealing or enveloping coatmg andgranuprise sawdust, cor

ular-free bands 5, 6 and 7 is carefull lar surfacing applied to the folded element shown in Fig. 4.

' Referring more in detail tothe drawings,

A1 'designates a sheet of flexible rooling'mate- One surface of this sheet is coated with an adhesive material in predetermined areas, or

' according to a predetermined design. Granular material designated at 2 which may comground up roofing waste, or mineral granules, is imbedded 'in th coat- Aed areas.

In Fig. l these areas are illustrated as taking the form of longitudinally spaced strips 3 and 4 leaving intermediate the unsurfaced strip 5 and marginal bands 6 and 7 of uncoated saturated felt. It is to be understood of course, that the present invention is not limited to applying and uniting the granular surfacingl material in any regular design,

asv

for instance, it may be found desirable to imbed this granular material in irregular areas of different design than longitudinal strips. It is also to be noted that Fig. 1 illustrates stri 3 as being materially wider than strip 4. t is of course, understood that this is merely for the purpose of illustration, as

the width of these two strips may vary widely relative to ,each other within the contemplation of the invention.

Preferably, the relative widths of the graa justed so that when the sheet is folde and the marginal edges 6 and 7 brought together, there will be a greater bulk of granular material immediately adjacent the fold, gradually decreasing in thickness toward the other edge to provide a thick butt ,tapered roong element shown asa whole in Fig. 4\ Before the sheet is folded, a coating of adhesive material such as asphalt, isa plied to the sheet so that when the sheet is olded and the opposed surfaces of both the fold and granular material brought together, adhesion will result. This adhesive material is illustrated in Figs. 4 and 5 by the numeral 8.

, As a feature of the present invention, after the sheet has been folded, and the opposed The coating is illustrated in Fig. 5 by the numeral 9, and the granular surfacing by.

the numeral l0.

It will be apparent that by varying the Y position or shape of the granular covered and granular-free areas as shown in Fig. l' with relation to the fold, a tapered element or stock of any particular configuration or taper can be produced.

It is also obvious that the size of the granules can be varied so that the granules which are adjacent finally to the thinnest width of the folded element, are of the smallest size, while the granular particles at the portion constituting the butt of the element are of coarser size. A stock made in this way can be slated for shingle strips or cut linto individual shingles, but in any event should be dipped in coating and slatedv in the usual way.

claim as my invention:

l. The method which comprises-applying and adhesively uniting granular surfacing material to a face of a flexible sheet of roofing material, folding said sheet intermediate its edges so as to bring portions of said granular surfaced face into opposed relationship.

2. The method which comprises applying and adhesively uniting granular material to a surface of a flexible sheet of roofing material. folding said sheet intermediate its edges and joining the surfaces to incorporate the granular material in thev interior of the folded sheet, and regulating the application of thegranular material so that the amount of granular material in the interior of the folded sheet is materially greater adjacent the folded edge than at the opposite joined edge.

' 3; The method which comprises applying folded sheet, regulating the application' of the granular material so that the amount of granular material in the interior of the folded' sheet is materially greater adjacent the folded edge and at the opposite joined edge,

f coating the folded sheet and imbedding granular surfacin lin said coating.

4. The met od which comprises applying.

The usualv and adhesively uniting cork granules to a s urface of a flexible sheet of roofing material, folding said sheet intermediate its edges and joining the surfaces to incorporate thecork granules in the interior of the folded sheet.

5. The method which comprises applying and adhesively uniting granular material to the surface ofa liexible roofing sheet in the form of spaced areas intermediate the side edges, folding said sheet on a line corresponding to a space between predetermined granular surfaced areas and joining the oplposite marginal granular-free bands to incorporate the granular material in the interior of the folded sheet.

6.. The method which comprises applying and adhesively uniting granular material to the surface of a fiexible rooling sheet in the forni of spaced areas intermediate the side edges, folding said sheet on a line corresponding to a space between predetermined granular surfaced areas yand joining the opposite marginal granular-free bands to incorporatel the granular material in the interior of the folded sheet, so regulating the width of the granular surfaced areas relative each other as to concentrate in the folded sheet the granular material in greatest bulk adjacent the folded edge to produce a thickened butt` at said edge relative the opposite edge.

7. The method which comprises applying and adhesively uniting granular material to a iexible roofing sheet in spaced longitudinal areas intermediate the side edges thereof to produce a sheet having spaced bands of granular material and marginal and intermediate bands free of said granular material, folding sgid sheet on a line corresponding to a predetermined intermediate band free of said granular material and joining said granular free marginal edges to incorporate the granular material in the interior of said folded sheet in greatest bulk adjacent the folded edge, whereby a thickened butt is produced at said folded edge. i

8. The method which comprises applying and adhesively uniting granular material to a fiexible roofing sheet in spaced longitudinal aieas intermediate the side edges thereof, said strips being of different Width relative each other, to produce a sheet having spaced bands of granular material and marginal and intermediate bands free of said granular-inaterial, folding said sheet on a line corresponding to a predetermined intermediate band free of said granular material and joining said granular-free marginal edges to incorporate the granular material in the interior of said folded sheet whereby a thickened butt is produced atl lsaid foldedl edge, the relative widths of said bands of granular material being so regulated as to produce a folded sheet tapering from `the thickened butt to the joined edges.

9. The method which comprises applying and adliesivelyuniting cork anules to a flexible roofing sheet in space longitudinal areas intermediate the side ed es thereof to produce a sheet having spaced ands ofcork rior of said folded slieetin greatest bulk adjacent the folded edge, whereby a thickened butt is producedat said folded edge. j

10. The method which comprises applying u and adhesively unitin Agranular material to a flexible rooig'sheet 1n s aced'lrongitudinal areas `intermediate the si e edges thereof to produce a sheet having spaced bands of gran- 'ular material and marginal and intermediate .bands free of said granular material, folding said sheet on a line corresponding to a predetermined intermediate band free of said granular material and joining said granular-free marginal edges to incorporate the granular material in the interior of said folded sheet in greatest bulk adjacent the folded edge, whereby a thickened butt is produced at said folded edge:

11. The method which comprises applying and adhesively uniting intermediate the edges of a fiexible roofing sheet spaced stripes of anular material to produce a sheet exhibiting intermediate and marginal bands free of such granular material, in folding said sheet on an intermediate granular-free line and forcing the opposite foldedl surfaces together to incorporate the granular material in the interior of the sheet* and unite the granular surfaced areas, and regulating said granular-surfaced stripes relative to eachl other so as to concentrate the granular ma` terial'in greatest bulk .in the interior of the folded sheet adjacent the folded edge, whereby to produce a thickened butt at said edge.

12. A method which comprises -applying and adhesively uniting granular material to the surface of'a fiexible sheet-of roofing maf terial, folding said sheet intermediate its edges and joining the surfaces to incorporate the granular material inthe interionof the folded sheet, coating all exposed edges and surfaces with an impervious envelope of high melting point asphalt and imbedding granular material in said coating.

13.1'The method which comprises applying and adhesively uniting granular surfacing material to a. face of a fiexible sheet of roofing material,-folding said sheet upon itself soas to bring sections of said surfaced face into opposed relationship, and coating the thus laminated base with high melting point asphalt to prevent delamination.

14. The method of producing thick butt tapered roofing elements which comprises surfacing spaced areas of a face of a felted fiof sai brous foundation with granuular material, folding said foundation upon itself on a' line intermediate said surfaced areas so as to bring said surfaced areas into contacting relation and applying a sealing coat of asphalt to thev edges and surfaces of the folded element which are to be exposed to the Weather when said element is laid with others on a roo .i

15. The method of producing thick butt tapered 'roofing' elements which comprises surfacing spacedareas of a felted fibrous foundation with granular material, one of 'said surfaced areas being of greater extent in one direction than the adjacent area, folding said foundation upon itself on a line int-ermediate said surfaced areas so as to bring said surfaced areas into contacting relation, and l applying aV sealin coat of as halt to the edges and surfacesg of the follded element which are to be ex osed'to the weather when said element is lai with others ona roof.'

16. As an article of manufacture, roofing material comprising a section of granular surfaced fibrous roofing base folded upon itself so as to bring portions of the surfaced fac?J thereof into opposed contacting relatiogiship with each other, said opposed portions being adherently united by a layerof waterproof adhesive.- 17. Roofing material comprising a section of granular surfaced fibrous roofing basev folded upon itself so as to bring portions of the surfaced face thereof into opposed contacting relationship with each other, the

folded product having a sealin coat'of as- .phalt on all surfaces and e ges thereof which are'to be exposed to the Weather when laid on a roof.

' 18. Roofing material comprising a section of granular surfaced fibrous roofing base folded upon itself so as to bring portions of' tacting relationship with each ot er,l a granular surfacing on one of said portions extendin for a greater distance ltransversely if fold than the surfacing on the opposed portion.

L20. Roofing material comprisinga section of granular surfaced fibrous roofin base bas. f

folded upon itself so as to bring portions of i l the surfaced facethereof into opposed contacting relationship with each other, the granular surfacing on said folded portions being thickest adjacent the fold.

2l. Roofing material comprising a section of granular surfaced fibrous roofing base folded upon itself so as to bring portions of the surfaced face thereof into opposed contacting relationship With each other, the granular surfacing on said folded portions being thickest adjacent the fold, and gradually diminishing in thickness in a direction away from the fold.

22. Roofing material comprising a section of granular surfaced fibrous roofing base folded upon itself so as to bring portions of the surfaced face thereof into opposed contacting relationship with each other, the granular surfacing on one of said portionsextending for a greater distance transversely of said fold than the surfacing on the opposed portion, and the folded product having a sealing coat of asphalt on all surfaces and edges thereof which are to be exposed to the weafther when the product is applied on a roo 23. Roofing material comprising a section of granular surfaced fibrous roofing base folded upon itself so as to bring pqrtlons of the surfaced 4face thereof into opposed contacting relationship with each other, the granular surfacing on said folded portions being thickest adjacent the fold, and the folded product having a sealin coat of asphalt on all surfaces and edges t ereof which are to be exposed to the Weather when the product is applied on a roof.

24. Roofing material comprising a section of granular surfaced fibrous roofing base folded upon itself so as to bring portions of the surfaced face thereof into opposed contacting relationship With each other, the granular surfacing on said folded portions gradually diminishing in thickness in a direction awa from the fold and terminating inwardly o the opposite edge of the folded product.

25. A waterproof covering comprising laminae of as halt saturated and coated and granular sur aced roofing base, the laminae being united with the surfaced faces thereof v in opposing contact, and the granular surfacing on the interior of the laminated structure being thicker at one edge thereof than at the opposite edge.

LESTER KIRSCHBRAUN. 

